很奇怪，父节点无法控制spine的透明度了
但是shader 可以
复制一个spine的默认effect,加个变量opacity控制透明度，可以临时解决这个问题。
CCEffect %{
techniques:
- passes:
- vert: sprite-vs:vert
frag: sprite-fs:frag
depthStencilState:
depthTest: false
depthWrite: false
blendState:
targets:
- blend: true
blendSrc: src_alpha
blendDst: one_minus_src_alpha
blendDstAlpha: one_minus_src_alpha
rasterizerState:
cullMode: none
properties:
alphaThreshold: { value: 0.5 }
opacity: { value: 0.5 }
}%
CCProgram sprite-vs %{
precision highp float;
#include <cc-global>
#if USE_LOCAL
#include <cc-local>
#endif
in vec3 a_position;
in vec2 a_texCoord;
in vec4 a_color;
out vec4 v_light;
out vec2 uv0;
#if TWO_COLORED
in vec4 a_color2;
out vec4 v_dark;
#endif
vec4 vert () {
vec4 pos = vec4(a_position, 1);
#if USE_LOCAL
pos = cc_matWorld * pos;
#endif
pos = cc_matViewProj * pos;
uv0 = a_texCoord;
v_light = a_color;
#if TWO_COLORED
v_dark = a_color2;
#endif
return pos;
}
}%
CCProgram sprite-fs %{
precision highp float;
#include <alpha-test>
in vec4 v_light;
uniform cu {
float opacity;
};
#if TWO_COLORED
in vec4 v_dark;
#endif
in vec2 uv0;
#pragma builtin(local)
layout(set = 2, binding = 11) uniform sampler2D cc_spriteTexture;
vec4 frag () {
vec4 o = vec4(1, 1, 1, opacity);
#if TWO_COLORED
vec4 texColor = vec4(1, 1, 1, 1);
texColor *= texture(cc_spriteTexture, uv0);
o.a = texColor.a * v_light.a;
o.rgb = ((texColor.a - 1.0) * v_dark.a + 1.0 - texColor.rgb) * v_dark.rgb + texColor.rgb * v_light.rgb;
#else
o *= texture(cc_spriteTexture, uv0);
o *= v_light;
#endif
ALPHA_TEST(o);
return o;
}
}%
用代码直接控制也省得去托材质了
public static setMaterialOpacity(spine:sp.Skeleton,opacity:number){
resources.load("路径",EffectAsset,(err,eff)=>{
if(err) return;
var mat = new Material();
mat.initialize({
effectAsset: eff,
defines: { USE_RGBE_CUBEMAP: true }
});
let pass = mat.passes[0];
pass.setUniform(pass.getHandle('opacity'), opacity);
spine.customMaterial = mat;
})
}